Change fuel filter and add can of SEAFOAM to gas. now if your car has a 2.7 engine, these engines are suffering from sludge problems. most have to be replaced. One thing that can help with the sludge is also following direction, add an amount specified to your oil(what it says on a can of SEAFOAM).<p>
the 2.7 is a manufactuers defect, and Chrsyler is in court right now over it.

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Old and tired engine. 2.7, I would assume. Charge the battery and post the codes. Changing the valve seals only keeps it from smoking at start up. Burns the oil from the cylinders. If it smoked all the time it was the piston rings. Common on the 2.7 engines. Find another car.

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